Sound-reproducing machine.



H. J. MCG-REAL. SOUND REPRODUCAING MACHINE. APPLICATION FILED FEB. s, 1916.

Patented Aug. 27,1918.

m T m V w baarn sra HUG-H J. MGREAL, OF MILWAUKEE, WISCONSIN, ASSIGN'OR 0F ONE-HALF T0 MICHAEL S. SHERIDAN, OF MILWAUKEE,WISCONSIN.

SOUND-REPRODUCING MACHINE.

Specication of Letters Patent.

Patented Aug. 27, 191.8.

Application' led'February 8, 1916. Serial No. 76,888.

.of Milwaukee, in the county of Milwaukee and'State of Wisconsin, `have invented new and useful Improvements .in Sound-Repro ducing Machines, of which the 'following is a description, reference being had Ato the-accompanying drawings, which are a part of this specification.

This invention relates to improvements in sound reproducing machines.

It is one of the objects of thepreset in vention to provide a sound reproducing machine having a life size head mounted on the upper portion of the machine and having a horn extending from the reproducer to the head to give the impression that the reproduced sound is coming directly from the head..

A further object of the invention is to provide a sound reproducing machine having a divided amplifying horn, one branch` of which extends to a head mounted on the upper portion of the machine and the other branch extends downwardly through the machine in the ordinarymanner.

A further object of the invention is toprovide a sound reproducing machine having a divided or branched amplifying horn, and through either or both branches of which the sound may be directed. v

A. further object/,of he invention is to rovide a sound reproducing machine which 1s of simple construction, is strong and durable and is well adapted for the purpose described.

With the above and other objects in view the invention consists of the improved sound reproducing machine and its parts and combinations as setI forth in the claims, and all equivalents thereof.

In the accompanying drawing in which the same reference characters indicate the same parts in all of the views:

Figure 1 is a vertical sectional View of the improved sound reproducing machine;

Fig. 2 is a horizontal sectional view thereof taken on line 2-2 of Fig. 1;

Fig. 3 is a sectional detail view taken on line 3-3 of Fig. 2;- and Fig. 4 is a transverse sectional view taken on line 4 4 of Fig. 1. A

Referring to the drawing the numeral 8 indicates the casing of a sound reproducmg machine, 9 the cover thereof,'10 the reproducmg chamber and 11 the body portion of said machine. The reproducing chamber 10 is provided with the usual turn table 12 upon which the record 13 'is placed. The chamber also contains the reproducer 1 4 of ordinary construction which is hingedly connected to the free. outer; end of the tubular swing arm 15. The inner end of the swing` arm is divided into two tubularvbranch portions -16 and 17, the'branch 16 curving downwardly and ther branch 17 curving upwardly and entering an opening 18 formed inthe lower horizontal wall 19 of the top cover 9; ,Thezdownwardly curved branch 16 enters an opening 20 formed in the lower hori- -zontal wall 21 of the reproducing chamber and is revolubly mounted thereon by a swivel connection 2 2; The upper and lower ends of the branches are in vertical axial alinement to permit the swing arm to. freely swing in its arc of movement, and the upper end of the branch loosely enters the openingv of the Wall of the top cover to permit said .top cover to be opened and closed. An

amplifyin `horn23 is positioned in the body portion o the ,casing and its smaller end extends to'the opening 2O of the wall 21 and is connected theretovandfforms a continuation of the downwardly curved branch 16. The larger end of the-horn terminates at the front wall of the casing and the said front wall directly in front of the end of the horn is covered-with a grating or screen 24 to permitethe sound to pass therethrough.

The top cover 9 is of p'yramidal form and the apex is provided with arelatively large yopening 25 and has la hollow head 26, re-

sembling a humanhead, removably mounted on said apexportion. A supplemental amplifying horn 27 positioned in the cover chamber 28 and formed' in part of said cover has its smaller inlet end 29 connected to the relatively small wall opening 18 of the cover and forms a continuation of the upwandly curved branch 17 of the swing arm 15. The large discharge end 30 of the supplemental amplifying horn extends to the apex opening of the cover so that all sound waves or vibrations will pass from the supplemental horn and into the head and out of the mouth of the head. If desired the head may be formed of a thin material, such for instance as a silk gauze, or any material which will not interfere with the passage ofsound therethrough. The invention 'also contemplates the use ofheads in resemblance of both sexes so that an appropriatehead for the particular record may be used.

In order to direct the reproduced sound from the swing arm into either one or both branches of the said arm a valve 31 is mounted in the swing arm at the point of junction between the two branches and in a position to close off either branch from the swing arm proper. The valve is formed with a projection 32 which extends into a recessed portion 33 formed between the branches 16 and 17 and is provided with squared opening 34 to receive the cranked handle 35. The cranked handle 35 extends through and has in part its bearing in a nut 36 which is threaded in the swing arm, and at its inner end portion is provided with a squared portion 37 which fits the squared opening of the valve projection. By screw-` ing the nut 36 so its inner end wall bears against the squared portion of the cranked handlethe frictional engagement between the two parts will hold thevalve in adjusted position so that the said valve may be held in a position to'closeoff either branch or it may be held in acentral position to permit the sound to pass through both branches.

From the foregoing description it will be seen that the sound reproducing machine is of very simple construction and is well adapted for the purpose described.

What I claim as my invention is:

1. A sound reproducing machine, comprising a sound reproducing mechanism including a pivoted tone-arm having oppositely extending branches at one end, a pair of fixed amplifying horns separately connecting with each of said branches and having their discharge mouths distinct from each other, and means carried by said tonearm intermediate the ends of the branches for varying the relative volume of sound passing through the branches and the respective amplifying horns. l

2. A sound `reproducing machine, comprising a casing, and a removable cover for the same, both said casing and cover being provided with a horizontal wall having a Vertical opening therein, said openings being in alinement and the'space between said horizontal walls forming a closed reproducingchamber, a sound reproducing mechanism in said chamber and including a tonearm having an upwardly and a downwardly extending branch, the ends of the branches being free to rotate in said openings, a swivel mechanism for pivotally supporting said tone-arm on the horizontal wall of the casing, a Valve carried by said tone-arm at the junction of its two branches for directing the sound through either one, or both branches, and an amplifyino horn in the casing below its horizontal wzl, and another horn in the coverabove its horizontal wall, each of said horns connecting with one of said tubular branches.

n testimony whereof, I aflix my signature.

HUGH J. MCGREAL. 

